CN114486588A - Method for detecting position of sliding block of non-contact image sensor - Google Patents
Method for detecting position of sliding block of non-contact image sensor Download PDFInfo
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- CN114486588A CN114486588A CN202210094645.0A CN202210094645A CN114486588A CN 114486588 A CN114486588 A CN 114486588A CN 202210094645 A CN202210094645 A CN 202210094645A CN 114486588 A CN114486588 A CN 114486588A
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- image sensor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0083—Rebound strike or reflected energy
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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Abstract
The invention provides a method for detecting the position of a sliding block of a non-contact image sensor, which comprises the following steps: the non-contact image sensor sends out array light waves to obtain voltage data; converting the voltage data into 0 and 1 for acquiring identification data processed by the singlechip; determining slider length information according to the identification data; and determining the position information of the sliding block according to the length information of the sliding block. The one-dimensional scanning algorithm is adopted to detect the position of the slide block on the rebound body, so that the measurement precision can be effectively improved, and the position of the slide block and an interference source detected by the image sensor can be visually displayed in the digital display rebound device.
Description
Technical Field
The invention relates to the field of image sensors, in particular to a method for detecting the position of a sliding block of a non-contact image sensor.
Background
In the prior art, the integrated digital display resiliometer is portable intelligent nondestructive testing equipment and is mainly suitable for nondestructive testing of compressive strength of concrete structures such as buildings, bridges and tunnels. The concrete compressive strength is an important member index of the quality of the construction engineering. The traditional mechanical resiliometer is characterized in that an elastic hammer with a guide rod at the center is arranged in a shell, the elastic hammer is connected with an elastic tension spring between a front arm of the shell, a pointer guide rod parallel to the guide rod is arranged in an arm of the shell, a pointer is arranged on the guide rod, and a pointer indication surface is displayed in the long air of the pointer parallel to the guide rod on the shell. The front end of the pointer is fixed with a reed which is forwards inclined and extends out and is guided to the center of the shell of the mechanical part, and the reed is displaced towards the center of the shell to receive the pushing of the elastic hammer when in detection, thereby indicating the rebound value.
At present, the design scheme for detecting the position of a sliding block by an integrated digital display resiliometer mainly has two types: the scheme is that a digital display part is connected with a mechanical part through a signal line, namely, a vernier guide rod on a sensor shell is arranged on an electronic circuit cabin, so that parts except a rebound device in the sensor, namely, parts such as the vernier guide rod, a photoelectric switch, a grating, a photoelectric signal connecting line, an electronic circuit board and the like which are mutually involved are arranged in the electronic circuit cabin. During the building detection process, the connecting line of the digital display part and the mechanical part is in poor contact or open circuit due to long-time detection, so that the sampled data is lost, distorted or mistakenly transmitted, and the instrument is damaged due to the short circuit of a power line in serious cases, so that the resiliometer connected with the digital display part and the mechanical part by the signal line is not beneficial to daily maintenance, installation, maintenance, detection and the like of the rebound body; scheme II adopts non-contact opto-coupler sampling technique, and the digital display part increases structural scheme such as slide rail promptly and makes the opto-coupler sensor on the digital display part can detect the displacement distance of the slider on the resilience body to calculate the intensity that is detected the object at present, this scheme compares in scheme one, and convenient dismantlement and installation have effectively solved the technical problem of maintenance and change resilience body, have nevertheless produced new problem, if: the optical coupler is not easy to clean after ash feeding, the tail of the grating ruler is shaken to cause inaccurate counting, and after the usage time of the resiliometer equipment is too long, the digital display part and the rebound body sliding block cause inaccurate intensity calculation due to increase of friction force.
Disclosure of Invention
In view of the above problems, the present invention has been made to provide a slider position detection method of a noncontact image sensor that overcomes or at least partially solves the above problems.
According to an aspect of the present invention, there is provided a slider position detection method of a non-contact image sensor, the detection method including:
the non-contact image sensor sends out array light waves to obtain voltage data;
converting the voltage data into 0 and 1 for acquiring identification data processed by the singlechip;
determining slider length information according to the identification data;
and determining the position information of the sliding block according to the length information of the sliding block.
Optionally, the emitting the array light wave by the non-contact image sensor and obtaining the voltage data specifically include:
the non-contact image sensor emits array light waves with the length of 90mm, 720 pixels store 720 voltage value data each time;
when the pixel points in the array light wave have shielding objects, outputting a low voltage value; and when the pixel values in the array light wave have no obstruction, outputting high voltage values.
Optionally, the converting the voltage data into 0 and 1 specifically includes: the 720 voltage value data are converted into 0 and 1.
Optionally, the determining the slider length information according to the identification data specifically includes:
acquiring a continuous length of 1 in the 720 voltage data;
the continuous length is length information of the sliding block;
and taking a middle value according to the length information to determine the position information of the sliding block.
The invention provides a method for detecting the position of a sliding block of a non-contact image sensor, which comprises the following steps: the non-contact image sensor sends out array light waves to obtain voltage data; converting the voltage data into 0 and 1 for acquiring identification data processed by the singlechip; determining slider length information according to the identification data; and determining the position information of the sliding block according to the length information of the sliding block. The one-dimensional scanning algorithm is adopted to detect the position of the slide block on the rebound body, so that the measurement precision can be effectively improved, and the position of the slide block and an interference source detected by the image sensor can be visually displayed in the digital display rebound device.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a method for detecting a position of a slider of a non-contact image sensor according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The terms "comprises" and "comprising," and any variations thereof, in the present description and claims and drawings are intended to cover a non-exclusive inclusion, such as a list of steps or elements.
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and embodiments.
As shown in FIG. 1, the non-contact image sensor emits array light waves with a length of 90mm and a pixel point of 720. When the array light wave meets the obstruction, the array light wave is reflected, so that the array light wave is detected by the image sensor and is output to the processor. The processor judges the current position of the sliding block and other interference sources encountered on the array light wave by processing the output data of the image sensor, and further calculates the compressive strength of concrete structures such as buildings, bridges, tunnels and the like.
The slide block position detection method comprises the following steps: the non-contact image sensor can emit array light waves with the length of 90mm and 720 pixels, and 720 voltage value data are stored each time.
When a certain pixel point in the array light wave has a shielding object, the low voltage value is returned, and when the shielding object does not exist, the high voltage value is returned.
When the non-contact image sensor receives a data processing command of the single chip microcomputer, 720 voltage value data stored before are output to the mainboard processing circuit, and the voltage values are converted into two data which can be identified by the single chip microcomputer processor, namely 0 and 1 through the mainboard processing circuit.
After the single chip microcomputer receives 720 data, the position of the sliding block can be judged according to the length of 1, when the continuous length of 1 is almost the length of the sliding block, the sliding block is considered to be at the position, and then the compression strength of concrete structures such as buildings, bridges, tunnels and the like is calculated; when the continuous length of 1 is insufficient or too long, it is considered that the array light wave of the non-contact image sensor is disturbed, and an operation such as cleaning is required.
The single chip microcomputer serves as a main controller of the instrument, and all the functional modules are combined together to form the complete integrated digital display resiliometer.
The touch display displays the slider position and the measured object intensity.
The image sensor module is responsible for detecting the position of the sliding block and outputting data to the mainboard processing circuit.
The mainboard processing circuit is responsible for converting the analog data of the image sensor module into digital data which can be identified by the single chip microcomputer processor.
Has the advantages that: based on a non-contact image sensor scanning method, the position of the sliding block on the rebound body is detected by adopting a one-dimensional scanning algorithm, so that the measurement precision can be effectively improved, and the position of the sliding block and an interference source detected by the image sensor can be visually displayed in the digital display rebound device.
The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (4)
1. A method for detecting a position of a slider of a non-contact image sensor, the method comprising:
the non-contact image sensor sends out array light waves to obtain voltage data;
converting the voltage data into 0 and 1 for acquiring identification data processed by the singlechip;
determining slider length information according to the identification data;
and determining the position information of the sliding block according to the length information of the sliding block.
2. The method as claimed in claim 1, wherein the step of obtaining the voltage data by emitting the light waves in the array by the non-contact image sensor comprises:
the non-contact image sensor emits array light waves with the length of 90mm, 720 pixels store 720 voltage value data each time;
when the pixel points in the array light wave have shielding objects, outputting a low voltage value; and when the pixel value in the array light wave has no obstruction, outputting a high voltage value.
3. The method of claim 2, wherein converting the voltage data to 0 and 1 specifically comprises:
the 720 voltage value data are converted into 0 and 1.
4. The method as claimed in claim 3, wherein the determining the slider length information according to the identification data specifically comprises:
acquiring a continuous length of 1 in the 720 voltage data;
the continuous length is length information of the sliding block;
and taking a middle value according to the length information to determine the position information of the sliding block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210094645.0A CN114486588A (en) | 2022-01-26 | 2022-01-26 | Method for detecting position of sliding block of non-contact image sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210094645.0A CN114486588A (en) | 2022-01-26 | 2022-01-26 | Method for detecting position of sliding block of non-contact image sensor |
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| CN114486588A true CN114486588A (en) | 2022-05-13 |
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| CN202210094645.0A Pending CN114486588A (en) | 2022-01-26 | 2022-01-26 | Method for detecting position of sliding block of non-contact image sensor |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003074554A (en) * | 2001-09-03 | 2003-03-12 | Ckd Corp | Static slider, noncontact chuck, and chuck device |
| CN2563568Y (en) * | 2002-07-18 | 2003-07-30 | 潘宗岭 | Data collector of resiliometer |
| CN2872297Y (en) * | 2005-10-13 | 2007-02-21 | 哈尔滨工程大学 | Non-contacting and large-diameter measuring equipment based on image method |
| CN104501720A (en) * | 2014-12-24 | 2015-04-08 | 河海大学常州校区 | Non-contact object size and distance image measuring instrument |
| CN107238540A (en) * | 2017-06-05 | 2017-10-10 | 北京高铁建科技发展有限公司 | A kind of digital concrete resiliometer |
| CN109974597A (en) * | 2019-04-29 | 2019-07-05 | 大连理工大学 | A kind of X/Y plane photo-electric non-contact displacement sensor system and its application method |
| CN214622424U (en) * | 2021-03-31 | 2021-11-05 | 南京林业大学 | Non-contact photovoltaic module hot spot defect detection device |
| US20220076403A1 (en) * | 2020-04-23 | 2022-03-10 | Camx Power Llc | Image-based sensor for measuring rotational position of a rotating shaft |
-
2022
- 2022-01-26 CN CN202210094645.0A patent/CN114486588A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003074554A (en) * | 2001-09-03 | 2003-03-12 | Ckd Corp | Static slider, noncontact chuck, and chuck device |
| CN2563568Y (en) * | 2002-07-18 | 2003-07-30 | 潘宗岭 | Data collector of resiliometer |
| CN2872297Y (en) * | 2005-10-13 | 2007-02-21 | 哈尔滨工程大学 | Non-contacting and large-diameter measuring equipment based on image method |
| CN104501720A (en) * | 2014-12-24 | 2015-04-08 | 河海大学常州校区 | Non-contact object size and distance image measuring instrument |
| CN107238540A (en) * | 2017-06-05 | 2017-10-10 | 北京高铁建科技发展有限公司 | A kind of digital concrete resiliometer |
| CN109974597A (en) * | 2019-04-29 | 2019-07-05 | 大连理工大学 | A kind of X/Y plane photo-electric non-contact displacement sensor system and its application method |
| US20220076403A1 (en) * | 2020-04-23 | 2022-03-10 | Camx Power Llc | Image-based sensor for measuring rotational position of a rotating shaft |
| CN214622424U (en) * | 2021-03-31 | 2021-11-05 | 南京林业大学 | Non-contact photovoltaic module hot spot defect detection device |
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